An adamantane-based bis-NHC-palladium polymer was synthesized and characterized by FT-IR, solid state ¹³C NMR, element analysis, TGA, XRD, SEM, TEM and N₂ sorption. And then it was employed as heterogeneous palladium catalyst in the Suzuki–Miyaura coupling reactions of aryl halides and benzoboric acids, giving the products in moderate to excellent yields. Compared with the homogeneous catalyst such as Pd(OAc)₂, Pd(PPh₃)₄ and PdCl₂(dppf), our prepared polymer catalyst showed more catalytic activity in the coupling reaction. Furthermore, the polymer catalyst can be readily recovered and reused for further transformations at least four cycles without observing significant decrease in catalytic activity.

中文翻译：

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基于金刚烷的主链NHC-钯聚合物：合成及其在Suzuki-Miyaura反应中的应用

合成了基于金刚烷的双-NHC-钯聚合物，并通过FT-IR，固态¹³ C NMR，元素分析，TGA，XRD，SEM，TEM和N ₂吸附进行了表征。然后在芳烃卤化物和苯硼酸的Suzuki-Miyaura偶联反应中用作多相钯催化剂，使产品收率适中至优异。与均相催化剂如Pd（OAc）₂，Pd（PPh ₃）₄和PdCl _2相比（dppf），我们制备的聚合物催化剂在偶联反应中显示出更高的催化活性。此外，该聚合物催化剂可以容易地回收并至少在四个循环中再用于进一步的转化，而没有观察到催化活性的显着降低。